Speed mechanism.



PATBNTED MAY 31, 1904.

" J. B. BBNDER.

SPEED MBGHANISM. APPLICATION FILED SEPT. 12, 1902.

N0 MODEL.

wml/F55 l UNITED STATES Patented May 31, 1904.

PATENT OFFICE.:

JOHN B. BENDER, OF TOLEDO, OHIO, ASSIGNOR OF THREE-FOURTHS TO ERNEST L. ROWE, OF TOLEDO, OHIO.

SPEED MECHANISM.

SPECIFICATION forming part of Letters Patent No. 761,137, dated May 31, 1904.

Application ilef- September l2, 1902. Serial No. 123,186. No model.)

T0 all whom, it may concern,.-

Be it known that I, J oHN B. BENDER, a citizen of the United States, residing at Toledo, in the countyof Lucas and State of Ohio, have inventedcertain new and useful Improvements in Speed Mechanism; and I do hereby declare the following to be a'full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in speed-controlling mechanisms for varying the speed with which motion is imparted to any desired device.

In carrying out my invention I employ certain novel features of construction and the arrangement of the parts hereinafter shown, described, and claimed.

In the drawings, Figure 1 is a side elevation, partly in section, showing the speed-controlling mechanism; and Fig. 2 is a front view of the same.

i While my speed controlling mechanism may be used for various purposes, I have illustrated it as applied to a fuel-feeding apparatus and will describe'it in connection therewith.

Referring to the drawings, 1 is a receptacle or hopper adapted to receive finely-pulverized coal or other similar fuel. At the lower end of the hopper is provided a screw conveyer-2, which is mounted upon a shaft 3 and adapted to rotate within a casing 4., bearings being provided in the casing-heads 5 and 6. The top of the casing is open to admit pulverized fuel from the hopper, and at one end the casing communicates through a passage with an air-pipe 8, through which the air from a suitable fan or blower 9 is directed into the furnace 19.

I will now describe more particularly the mechanical means for controlling the speed,

of the mechanism. Keyed or otherwise secured upon the shaft 8, which carries the screw conveyer which feeds the fuel into the airpipe, is a disk 16, provided with a plane face. Arranged to rotate freely at the upper end of a standard 17 is a sleeve-pulley 18, adapted to rotate a shaft 19, slidably connected with the sleeve-pulley by a slot-and-key connection,

whenV the sleeve is movedlongitudinally the shaft will also be moved therewith. The sleeve 21 is adapted to be moved longitudinally within a divided standard 22', rotation of the same being prevented by means of keys 23, a slot being formed lengthwise of the sleeve to engage said keys. yMounted between divided portions of the standard 22 so as to be capable of rotation upon the sleeve 21 is a handwheel 24, having an internally-screw-threaded axial bore of a size to t the sleeve, the threads `upon the hand-wheel engaging those upon the sleeve. It is obvious that as the hand-wheel is operated the sleeve 21 will have a longitudinal movement within the divided standard 22 and that the shaft 19 will also move in the direction of its aXis of rotation. Upon this shaft between the standards is keyed or otherwise secured a friction-wheel 25, adapted to move across the face of and in contact with the disk 16. Therefore when the shaft is slid lengthwise the friction-wheel will take a position nearer the center if moved to the right or nearer the periphery of the disk if moved to the left of the position shown in full lines, Fig. 2. It is Vapparent that the speed of rotation of the disk upon the end of the conveyer-shaft may thus be varied at pleasure by A turning the hand-wheel 24., so that the rate of feed of the pulverized fuel may be accurately regulated.

The mechanism is placed in operation by connecting to a suitable source of power by means of a belt passing around the sleevepulley 18, the shaft 19, carrying the frictionwheel 25, being thereby made to rotate. The friction-wheel 25 being in contact with the disk upon the end of the conveyer-shaft, the latter will be rotated correspondingly. .If the motion is too rapid, the hand-wheel 24 is operated to shift the position of the frictionwheel 25 nearer the periphery of the disk 16, and, on the other hand, should the motion not be rapid enough the hand-wheel is rotated in the opposite direction to cause the friction- Wheel to take a position nearer the center of the disk. In this manner the speed of the mechanism may be accurately controlled.

Having now described my invention, What I claim as new, and desire to secure by Letters Patent, is-

A speed mechanism comprising a shaft and disk for operating the same, a longitudinallymoving shaft arranged in front of the disk, a friction-Wheel carried by the saine, apulley splined to the shaft for turning the same yet not interfering With its longitudinal adjustment, a Worm carried by the said longitudinally-moving shaft and a bearing receiving' the worm and preventlng 1ts rotation With the JOHN B. BENDER.

Witnesses:

CARL H. KELLER,A E. L. RoWE. 

